Be sure to clear cache.
- Renamed visible_slides into visible_items to allow re-usable by Blazy.
- Changed thumbnail_hover option into thumbnail_effect to allow variant thumbnail stylings: hoverable, static grid.
- Moved Slick admin CSS into Blazy to re-use for a few related modules.
- Moved slick.media.js, slick.photobox.js, and all re-usable stuffs into Blazy.